Syntheses and Spectral Properties of Several Unsymmetrical Sexiphenyls
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概要
- 論文の詳細を見る
Six sexiphenyls, including four new isomers, 2,3'-di (4-biphenylyl) biphenyl (2), 4-(2-biphenylyl)-o-(4), 4-(2-biphenylyl)-m-quaterphenyl (5), and 2-phenyl-p-quinquephenyl (6), were synthesized by the Ullmann cross-coupling of iodobiphenyl and diiodobiphenyl or of two kinds of iodoterphenyls. The characteristic bands of the infrared spectra (680-920 cm^<-1>) and signals of the proton magnetic resonance spectra of the sexiphenyls were assigned tentatively and are discussed briefly. The remarkable high field shifts of the p-phenylene proton signals in 4 (1.23 and 0.89 ppm) as compared with that of p-terphenyl (δ 7.68) presumably reflect the ring current effects caused by the presence of adjacent o-phenylene rings. Ultraviolet spectral studies indicated that the absorption curves of the sexiphenyls were related closely to those of the polyphenyls corresponding to their partial structures.
- 社団法人日本薬学会の論文
- 1982-08-25
著者
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小笹 茂
Kyoto Pharmaceutical University
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藤岡 靖弘
Kyoto Pharmaceutical University
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伊夫伎 英一
Kyoto Pharmaceutical University
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